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If you're looking for a pair of jeans that feels like real denim from the very first wear, then you should take a closer look at the THE FLAT HEAD FN-8004.
With its 18 oz heavy-weight denim, it's one of the particularly robust jeans in THE FLAT HEAD's range. The fabric is woven on historic shuttle looms and tightly processed with particularly strong weft threads. The result is denim with substantial weight, pronounced tension, and an uncompromisingly authentic feel.
In short: These jeans don't wear like lightweight fashion denim – they wear like denim.
18 oz Heavyweight Denim – Made for Character
For the FN-8004, THE FLAT HEAD uses a particularly densely woven 18 oz denim, whose strong weft thread gives the fabric its characteristic firmness and stability.
The denim is dyed with particularly deep indigo using the classic rope-dyeing process. Through wear and the associated friction, clear contrasts between darker and lighter areas emerge over time.
This is precisely what the FN-8004 is designed for: striking, high-contrast fades, as expected from high-quality Japanese selvedge denim.
The 18 oz denim has enough weight and structure to hold its shape excellently even with wear. At the same time, the high density of the weave provides the typical "heavyweight denim" feeling that denim enthusiasts love so much.
And the best part: The jeans only get better with you.
Wide Tapered – Generous at the Top, Clean at the Leg
The FN-8004 combines a high rise and a generous cut in the hip and thigh area with a distinct taper towards the lower leg.
This creates an interesting blend of classic workwear silhouette and a more modern, clean line.
The generous upper section offers plenty of freedom of movement, while the tapered leg ensures that the jeans don't look bulky despite their robust fabric.
This makes the FN-8004 surprisingly versatile: it works equally well with boots and workwear as with sneakers and a simple T-shirt.
And due to its heavy weight and stable construction, it is also an interesting choice for motorcyclists. The heavy denim sits stably on the body while riding and flaps significantly less than lighter fabrics.
Craftsmanship at the Highest Level
At THE FLAT HEAD, it's not just about the fabric, of course.
The main areas of the FN-8004 are crafted with a traditional chain-stitch felled seam. Especially with 18 oz heavy denim, this craftsmanship is particularly demanding: the thickness of the fabric and the multiple layers create enormous demands on the machine, thread, and, most importantly, the skill of the person making the seam.
Particularly impressive is the back yoke area, where several layers of fabric meet. A cleanly executed felled seam at this point is a true sign of artisanal quality.
The Belt Loop as a Small Denim Artwork
A typical THE FLAT HEAD detail can be found on the belt loops.
The fabric is folded inwards in the middle and stitched, creating a characteristic raised central ridge. The side-set seams are less exposed to direct friction and are therefore particularly durable.
With increasing wear, this raised area also begins to fade and develops its own small fade structure.
It's precisely these details that make the difference between a good pair of jeans and a pair of jeans you'll want to wear for years.
Original THE FLAT HEAD Metal Parts
THE FLAT HEAD also remains true to its philosophy when it comes to metal components.
The FN-8004 features a robust iron button fly and specially designed metal parts that are not just functional, but continue to change with the age of the jeans.
With wear, the iron button increasingly develops a darker, deeper surface and loses its original luster.
The copper-plated original rivets on the pockets also change over time, developing that matte, dark patina that perfectly matches the aging indigo.
Hidden Rivets – Vintage Technique with Purpose
On the back pockets, hidden iron rivets with copper plating are used.
THE FLAT HEAD deliberately positions these rivets a little deeper than on many conventional jeans and runs the seam very close to them. This better protects the thread and increases the durability of the pocket.
A classic vintage detail – but not just for aesthetic reasons, but with a clear functional background.
Leather Patch with its Own Story
The classic THE FLAT HEAD cowhide leather patch is, of course, also included.
Like the denim itself, the leather also changes over time. Through wear, the patch develops an individual patina, thereby becoming another part of the personal history of these jeans.
Since the FN-8004 is already One Wash, it can be worn immediately and begins to write its own story from day one.
A True Heavyweight Jean for True Denim Lovers
The THE FLAT HEAD FN-8004 is for everyone who doesn't just focus on the look of a pair of jeans.
This is about weight, texture, craftsmanship, and long-term development.
18 oz heavyweight denim, historic shuttle loom, deep indigo, traditional chain-stitch felled seams, original metal parts, and a wide-tapered cut result in a pair of jeans that becomes more individual with increasing wear.
The beginning is dark and uncompromising.
The rest is up to you.
18 oz. Japanese Heavyweight Denim. Built to Fade. Made in Japan.
Details
- Model: FN-8004
- 18 oz Heavyweight Denim
- Wide Tapered Fit
- High Rise
- Generous hip and thigh area
- Tapered Leg
- Deep Indigo / Blue
- Rope-Dyed Indigo
- Woven on historic Shuttle Looms
- One Wash
- Iron Button Fly
- Original THE FLAT HEAD Metal Parts
- Iron Rivets with Copper Plating
- Hidden Rivets on the Back Pockets
- Traditional Chain-Stitch Felled Seam
- Reinforced / Raised Belt Loops
- Offset Center Belt Loop on the Back Yoke
- Cowhide Leather Patch
- Particularly suitable for motorcycles / bikes
- 100 % Cotton
- Made in Japan
Material
100 % Cotton
Denim
18 oz Heavyweight Selvedge Denim – Shuttle Loom
Color
Blue / Deep Indigo
Origin
Made in Japan

